JPS5850543B2 - roll coater - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an apparatus for applying adhesive in a narrow width to the corrugated top of an exposed core of a single-sided corrugated board running in a corrugator.

The present applicant previously applied for a corrugated board made of single-sided corrugated board with a narrow liner arranged only in the necessary areas.
-087889 Cardboard box, Jitsugan 53-08789
No. 0 anti-slip corrugated cardboard box, Utility Model Application No. 170970, corrugated sheet with a back liner on the main part, Utility Model Application No. 170970, Utility Model Application No. 170970
No. 170971 (corrugated cardboard sheet with a back liner placed on the flap-corresponding part), Utility Model Application No. 54-069604 (corrugated cardboard sheet with a front liner placed on the main part), and a patent application filed for a manufacturing method and manufacturing apparatus for this kind of corrugated cardboard (patent application No. 170971). Showa 54-08
0230 Corrugated cardboard manufacturing method and its manufacturing device, patent application 1973
No. 4-133014 Corrugated cardboard manufacturing method and its manufacturing device,
Japanese Patent Application No. 54-133519 (Method for manufacturing corrugated board having a narrow liner in the main part and apparatus for manufacturing the same), the present application pertains to an invention for improving an adhesive applicator among the manufacturing apparatuses used in the manufacturing method.

That is, the cited invention applies adhesive to the entire adhesive surface of the narrow liner, but the present application uses a roll coater that applies adhesive only to the necessary portions of the center corrugated top to reduce the amount of adhesive applied. We try to provide the following.

The present invention will be explained in detail below.

FIG. 1 is a partially cutaway perspective view showing an embodiment of the roll coater of the present invention.

The roll coater has a support body 1 consisting of a bottom plate 1a to which an appropriate number of wheels 1c are attached so as to be movable in the width direction, and two side plates 1b and 1b that stand upright at both ends of the bottom plate 1a in the width direction. , a bat 2 positioned between the side plates 1b and lb.
an appropriate number of narrow glue rolls 3; a glue roll shaft 4 to which the glue rolls 3 are mounted so that the lower part thereof enters the vat 2 and is movable in the width direction; and a glue roll shaft 4 positioned above the glue rolls 3. A rider roll 5 installed between the side plates 1b and 1b, a doctor device 6 installed between the side plates 1b and Ib so as to come into contact with the side of the glue roll 3, and the bat 2.
A guide plate 7 is installed parallel to the side plates 1b and 1b in the same number as the glue rolls 3 so as to be movable in the width direction below the glue roll 3, and one end of the guide plate 7 is attached to the side of the glue roll 3. A guide arm 8 is attached so as to be rotatable, and the other end is attached to the guide plate 7, and if necessary, the guide arm 8 of the guide plate 7 is fixed at one end to a surface and the free end is attached to a suitable width. The liner guide 9 has a narrow liner guide 9 shaped into an "l-co" or "mouth" shape.

The support body 1 is made of a rigid body such as a wooden plate, an iron plate, or a synthetic resin, and a minimum of four wheels 1c are attached to the front and rear sides of the bottom plate 1a, that is, to the side to which the side plates 1b are not attached.

As described above, the support 1 is movable in the width direction,
If the installation location of the support 1 in the corrugator is a fixed size, the wheels 1c, 1c, etc. are connected to each other or provided with a rail on the floor surface in the running direction of the wheels 1c, 1c... The wheels 1c, 1c, . . . may be moved along.

The length of the bottom plate 1a in the width direction is the same as that of the single-sided corrugated cardboard 1 that can be used.
The length in the front and rear direction is determined by considering the maximum width of 0, and the length in the front and rear direction is determined depending on the installation situation of the bat 2 and other various members.

The vat 2 is for storing a liquid adhesive therein and supplying the adhesive to the glue roll 3,
It may be made of a material or in a form that is commonly used in this kind of roll coater, and may be constructed of, for example, an adhesive collection pan 2a and an adhesive supply tray 2b attached to the adhesive collection pan 2a.

The bat 2 can be positioned between the side plates 1b, Ib of the support body 1 by drilling a suitable hole in a desired part of the side plates 1b, 1b, or by drilling a hole at a desired position downward from the top of the side plates 1b, lb. A notch of an appropriate size may be made in the hole or notch, and both ends of the bat 2 may be passed through and placed on this hole or notch.

Alternatively, the bat 2 may be fixed to the inner walls of the side plates 1b using bolts or the like, or the side plates 1 may be fixed to the inner walls of the side plates 1b, 1b.
A plate-shaped body or the like may be fixed to the inner walls of b and lb to provide a convex portion, and the end of the bat 2 may be placed on the convex portion.

The glue roll 3 is made of a material commonly used for corrugators, but as mentioned above, its shape is narrow.

This narrow width range corresponds to the width of the narrow liner 11 that is bonded to the exposed core 10a of the single-sided corrugated board 10.
The narrow liner 11 has a width of 1 to 7 cm, which is sufficient to cover the upper and lower ruled lines when the corrugated cardboard 12 is made into a box, and a width of 1 which is sufficient to cover the flap or box body of a cardboard box of any size. Various dimensions are possible depending on the application.

That is, in this specification, "narrow width" is always used to mean a range narrower than the width of the single-sided corrugated board 10.

The number of the glue rolls 3 is increased or decreased according to the arbitrary increase or decrease in the number of narrow liners 11 to be bonded, and the number of the glue roll shafts 4
It is fitted externally so that it can be moved in the width direction when necessary.

The glue roll shaft 4 is made of a material commonly used for glue rolls, such as steel, and is rotatably attached to the side plates 1b, 1b of the support 1 so that the lower part of the glue roll 3 enters the vat 2. installed.

The widthwise mobility of the glue roll 3 is achieved by providing the glue roll shaft 4 with a convex groove 4a or grooves 4a in the width direction, and by providing the glue roll shaft 4 with a groove 4a in the width direction. A groove 3a or a groove 3a matching the dimensions of the groove 4a or groove 4a is provided over the area so that the groove 4a and groove 3a or the groove 4a and the groove 4a are connected to each other. 3a and secure it by fitting it together.

The glue roll 3 has a convex strip 4a or 3a and a concave strip 3a.
Alternatively, it can be moved along line 4a.

The rider roll 5 may be made of a material and in a form commonly used in this type of roll coater.

The doctor device 6 used in the past may also be a commonly used doctor device.

For example, this may be a doctor roll 6a with a doctor roll scraper 6b brought into contact with the glue roll 3, or a doctor knife may be used.

As mentioned above, the guide plates 7 are mounted parallel to the side plates 1b, 1b so as to be movable in the width direction below the bat 2, and the same number of guide plates 7 as the glue rolls 3 are provided.

That is, for this, at least two holes are bored at appropriate positions in the guide plate 7, and the side plates 1b, Ib of the support body 1 are inserted into these holes.
The guide plate 7 is held in a hollow position by penetrating the supporting shirts 7a and 7a passed between them, and another hole is drilled at an appropriate position in the guide plate, and the guide plate is inserted into the hole. A moving shirt) 7b screw-molded by a desired width direction movement distance of 7 is rotatably attached between the side plates ib, ib, and one end of the moving shirt) 7b is attached to the side plate 1b.
It is sufficient that the screw molded portion 7c of the threaded portion 7c of the thread 7ba is fitted therethrough.

In this way, by operating the handle 7ba, the guide plate 7 can move the threaded portion 7c of the movable shirt 7b.

If there are a plurality of guide plates 7, it is preferable to attach the same number of movable shirts 7b.

In this case, the guide plates 7 are not limited to moving the same distance uniformly, and the narrow liners 11, 1
Corresponding to one desired bonding position, each corresponding guide plate 7 can be moved a desired distance by operating each bundle 7ba.

The material of the guide plate 7 is made of a rigid body such as wood, metal, or synthetic resin, and its shape is similar to that of the support shirt. a. Any area can be determined as long as the moving shaft 7b can be arranged, but it is preferable to raise the machine direction end 7d of the single-sided cardboard 10 by a certain width and place it on the side of the bat 2. 1 to the upper position from the end 7
In view of the purpose of the guide plate 7, it is preferable to allow the support shaft 7a to pass through the guide plate 7a. Yes.

It is preferable to prevent the lower end of the guide plate 7 from coming into contact with the bottom plate 1a of the support body 1, as this will improve mobility.

The guide arm 8 is made of steel or other material having toughness and rigidity, and one end is attached to the side of the glue roll 3 so that the glue roll 3 can rotate, and the other end is attached to the guide plate 7.
It is fixed to .

The guide arm 8 is attached to the glue roll 3 by making the glue roll 3 have a common internal hollow space and by attaching the convex portion 3 to the glue roll 3.
A guide ring 3b provided with a convex part 3a or a concave groove 3a is installed in a predetermined hollow part inside the ridge where the concave groove 3a or concave groove 3a is shared, and the circumferential diameter of the guide ring 3b is made to match the groove part 3ba of the guide ring 3b. The arc-shaped arm end 8a may be inserted (see FIG. 2).

The guide link 3b may be made longer than the width of the glue roll 3, and may be fitted into the inner hollow of the glue roll 3, leaving the groove 3ba.

In this case, the hollow part of the guide link 3b is made to have the same diameter as the glue roll shaft 4.

The guide arm 8 is fixed to the guide plate 7 by welding,
This can be done by conventional means such as adhesive bonding or riveting.

For example, the end of the guide arm 8 on the guide plate 7 side may be formed into a ring shape, and the support shaft 7a may be passed through the ring shape.

The narrow liner guide 9, which is attached as necessary, is attached to the guide plate 7 so as to extend the free end 9a in the flow direction of the single-sided corrugated cardboard 10.

The free end 9a is formed into a "U" shape or a "mouth" shape as described above, and the "U" portion has an opening, and the "mouth" portion has an inner diameter in the width direction that matches the width of the glue roll 3. It is made wide and held horizontally.

That is, the narrow liner guide 9 is attached to the guide plate 7 so that the width positions of the glue roll 3 and the free end 9a are aligned with each other on the side of the glue roll 3 in the traveling direction of the single-sided corrugated board 10.

For example, the narrow liner guide 9 is attached to the guide plate 7 by forming the side end into a ring shape and fitting it into the support shirt 7a or the ring at the end of the guide plate 7 of the guide arm 8. (See Figure 2)
.

The narrow liner 11 passing on the side or below the guide plate 7 passes through the free end of the narrow liner guide 9, so that the running position faces the straight line of the glue roll 3 and the single-sided corrugated board It can be adjusted to a position corresponding to the adhesive coated portion of No. 10.

The roll coater of the present application is constructed from the above-mentioned members, and is made up of, for example, the glue unit 1 of a corrugator.
3 and the double backer 14 under the wrap roll 15 (see FIG. 3).

That is, the single-sided corrugated board 10 that has passed through the glue unit 13 of the corrugator is transferred to the lidar roll 5 after passing through the wrap roll 15 where no adhesive is applied to the corrugated top of the core 10a.
and the glue roll 3, and the adhesive is applied in a narrow width only to the desired part of the corrugated core 10a and guided to the double backer 14, but the adhesive on the corrugated core 10a is The application position is adjusted as follows.

That is, first, push the side plate 1b of the support body 1 to position the coater of the present invention in an appropriate position, then operate the bundle 7ba attached to the guide plate 7 to rotate the moving shaft 7b, and then move the moving shirt 7b. The threaded portion 7c is moved by a desired distance in the width direction using the guide plate 7.

As the guide plate 7 moves, the guide arm 8 also moves by the same distance in the same direction, and as the guide arm 8 moves, the glue roll 3 moves in the same direction and by the same distance. It is located directly below the desired adhesive application area of the core 10a of the single-sided corrugated board 10.

Of course, as mentioned above, if it is necessary to bond a plurality of narrow liners 11 to the single-sided corrugated board 10, the number of glue rolls 3 corresponding to the number of narrow liners 11 to be applied, and therefore the guide arm 8 and guide A board 7, a moving shirt) 7b and a bundle 7ba are provided, and each bundle 7b
It is also possible to adjust the position by individually moving the glue rolls 3, 3, . . . by operating a.

As described above, the narrow liner guide 9, which is attached if necessary, also moves in the same direction and the same distance as the guide plate 7 moves.

The single-sided corrugated board 10 with the adhesive applied to the corrugated top of the core 10a is brought to the double backer 14, where it passes through the liner preheater 13a of the glue unit 13 of the corrugator, and then passes through the side plate of the roll coater of the present invention. 1b and 1b, passes through the guide roll 16 located at the lower part between the roll coater of the present invention and the double backer 14, and is then passed through the narrow liner guide 9 installed as necessary. After the running position is adjusted to correspond to the adhesive application area, the narrow liner 11 guided by the double backer 14 and the corrugated top are bonded at the adhesive application area of the center core 10a of the single-sided corrugated board 10 to produce a finished high corrugated board. It becomes 12.

The roll coater of the present invention has the above-mentioned configuration, and by using it, the following effects can be obtained.

(1) Since the roll coater of the present invention has a narrow glue roll, it is possible to apply adhesive only to the necessary portions of the exposed corrugated top of the single-sided corrugated board.

Therefore, if this method is used, the purpose of manufacturing corrugated board can be achieved with a minimum amount of adhesive applied compared to the case where the adhesive is applied to the entire surface of the narrow liner.

(2) Since the roll coater of the present invention can move itself in the width direction and can also move the glue roll in the width direction, the single-sided corrugated board can be exposed at various desired adhesive application positions on the single-sided corrugated board. Adhesive can be applied to the core.

(3) Since the roll coater of the present invention can arbitrarily increase or decrease the number of glue rolls, it is possible to apply adhesive in response to changes in the number of adhesive-applied portions of single-sided corrugated board.

(4) Since the roll coater of the present invention adjusts the coating position by pushing and pulling the support or by manipulating the bundle attached to the moving shaft, the operation is extremely simple and does not require any skill or training.

(5) In particular, when using a narrow liner, installing a narrow liner guide on the roll coater of the present invention makes it possible to ensure the running position of the narrow liner, so that the adhesive application area of the single-sided corrugated board can be precisely A narrow liner can be attached.

[Brief explanation of drawings]

FIG. 1 is a partially cutaway perspective view showing an embodiment of the roll coater of the present invention, FIG. 2 is a perspective view of a glue roll, a guide arm, and a narrow liner guide related to the roll coater of the present invention, and FIG.
The figure shows an example in which the roll coater of the present invention is used in a corrugator, and FIG. 4 is a schematic diagram showing how adhesive is applied to a single-sided corrugated board using a glue roll. In the figure, 1 is a support, 2 is a bat, 3 is a glue roll, 4 is a glue roll shaft, 7 is a guide plate, 7a is a support shaft, 7
b is a moving shaft, 8 is a guide arm, 9 is a narrow liner guide, 10 is a single-sided cardboard 11 is a narrow liner,
12 is a finished cardboard, 13 is a glue unit, and 14 is a double facer.

Claims (1)

[Claims] 1. A support body consisting of a bottom plate to which an appropriate number of wheels are attached so as to be movable in the width direction, and two side plates that stand upright at both ends of the bottom plate in the width direction, and a bat positioned between the side plates; An appropriate number of narrow glue rolls, a glue roll shaft to which the glue rolls are mounted so that the lower part thereof enters the vat and is movable in the width direction, and a rider to be mounted between the side plates so as to be positioned above the glue rolls. a roll, a doctor device attached between the side plates so as to be in contact with the side portion of the glue roll, and a doctor device installed between the side plates so as to be in contact with the side portion of the glue roll, and parallel to the side plate so as to be movable in the width direction below the bat, so that the same number of the glue rolls are arranged in correspondence with each other. A guide plate to be attached, a guide arm whose one end is attached to the side of the glue roll so that the glue roll can rotate, and whose other end is attached to the guide plate, and the free end is attached to the side of the glue roll so that the glue roll can rotate. Roll coater 0 comprising a narrow liner guide formed into a "mouth" shape.